my 4G is not working

I just got a new Mifi and i wanted customizing it on the browser but the key “admin” isn’t working, I have been trying and I now have one trial left. It’s the MTN BROADBAND 4G...

Hey MTN i have a 4g network but it's working I can't work on TikTok and can't use my Opera mini telegram and chrome and I still have 6gb left

Good morning. My 4G sim has stopped working completely on my phone in the last one hour. I have tried switching my phone on and off, with no success. I hope there is no issue.